2004.5-2005 GM 2500HD/3500HD 6.6L LLY Duramax Rods, Pistons, Cams & More

When a piston becomes worn or damaged on your 2001-2004 GM 6.6L Duramax LB7, it must be immediately replaced before you cause any more harm to your truck down the road. In general, if one piston wears out, the others are already on their way out, so it's best replace all of your pistons with a complete set. Here at Alligator Performance, we make purchasing pistons & rings easy with out premium aftermarket selection designed to deliver an improved ring seal each time you get behind the wheel. As a result of swapping out your pistons and rings, your engine will deliver more power and run more efficiently in every occasion. GM Duramax Fitments: 2004, 2005 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.